I. EXERCISE Define binomial distribution and state its properties. L

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binomial dist (1 of 4)
[EXERCISE
Define binomial distribution and state its properties.
1.
2.
State the probability density function of normal distribution and state the Important properties
of normal distribution.
3.
It is observed that 30% of the students in a class are swimmers. If 3 students are selected at
random from this class. What is the chance that only one of them is a swimmer. Also find the
probability that at least one of them is a swimmer.
4.
A die is thrown three times. Find the probability of obtaining atleast one six.
4.A. A fair die is rolled 5 times and occurrance of 2 or 3 is considered as success. Find the
probability of (i) atleast 4 success, (ii) mode
SA
Arun has won 20 out of 30 games of chess against Bhaskar. In a new series of 6 games, what
is the probability that Arun will win ?
(i) 4 or more games (ii) all six games
B.
A certain type of plastic bag in the past has burst 30% of the time. If a prospective buyer tests
5 bags chosen at random, what is the probability that exactly one will burst?
C.
The probability that India wins one-day cricket match against England is given to be 1/3. If
India and England play three one-day matches, find the probability that (i) India will lose all
the three matches (ii) India will win at least one match.
For a binomial distribution, the mean is 12 and the standard deviation is 3. Find the
expression for calculating, the probability of obtaining at least one success.
A. A box contains 100 Transistor 20 out of which are defective. 5 Transistors are selected for
inspection, find the probability that (i) all 5 are defective (ii) At the most 3 are defective.
3. If 20% of the bolts produced by a machine are defective, determine the probability that out
of 4 bolts (i) zero (ii) at the most (iii) at the most 2 bolts will be defective.
If the mean of the binomial distribution is 3 and variance is 3/2, find the probability of
getting atleast 5 successes.
A. Assume the probability that a bomb dropped from an aeroplane will strike a target is 1/5. If
6 bombs are dropped, find the probability that (i) exactly two will strike the target (ii) at least
two will strike the target.
B. The probability that a will make a profit in any business deal is 0.8, what is the probability
that he will make a profit exactly eight times in ten successive deals.
Scanned with CamScanner
SP SP SP
10.
of the twelve accounts held in a file, four contain a procedural error in posting account
balances. If an auditor audits three accounts at random, what is the probability that (i) at least
(wo will contain an error? (ii) all of them contain an error?
il
A fair die is thrown 5 times. Getting an even number is a success. Find the probability of
getting (i) no success (ii) at least one success.
For a binomial distribution, the mean and the standard deviation are respectively 5 and 2.
Find the probability of getting 2 successes.
12.
Find n.p and q for Binomial distribution in following cases.
mean 20 d
Transcribed Image Text:Toh cqnnot say Done binomial dist (1 of 4) [EXERCISE Define binomial distribution and state its properties. 1. 2. State the probability density function of normal distribution and state the Important properties of normal distribution. 3. It is observed that 30% of the students in a class are swimmers. If 3 students are selected at random from this class. What is the chance that only one of them is a swimmer. Also find the probability that at least one of them is a swimmer. 4. A die is thrown three times. Find the probability of obtaining atleast one six. 4.A. A fair die is rolled 5 times and occurrance of 2 or 3 is considered as success. Find the probability of (i) atleast 4 success, (ii) mode SA Arun has won 20 out of 30 games of chess against Bhaskar. In a new series of 6 games, what is the probability that Arun will win ? (i) 4 or more games (ii) all six games B. A certain type of plastic bag in the past has burst 30% of the time. If a prospective buyer tests 5 bags chosen at random, what is the probability that exactly one will burst? C. The probability that India wins one-day cricket match against England is given to be 1/3. If India and England play three one-day matches, find the probability that (i) India will lose all the three matches (ii) India will win at least one match. For a binomial distribution, the mean is 12 and the standard deviation is 3. Find the expression for calculating, the probability of obtaining at least one success. A. A box contains 100 Transistor 20 out of which are defective. 5 Transistors are selected for inspection, find the probability that (i) all 5 are defective (ii) At the most 3 are defective. 3. If 20% of the bolts produced by a machine are defective, determine the probability that out of 4 bolts (i) zero (ii) at the most (iii) at the most 2 bolts will be defective. If the mean of the binomial distribution is 3 and variance is 3/2, find the probability of getting atleast 5 successes. A. Assume the probability that a bomb dropped from an aeroplane will strike a target is 1/5. If 6 bombs are dropped, find the probability that (i) exactly two will strike the target (ii) at least two will strike the target. B. The probability that a will make a profit in any business deal is 0.8, what is the probability that he will make a profit exactly eight times in ten successive deals. Scanned with CamScanner SP SP SP 10. of the twelve accounts held in a file, four contain a procedural error in posting account balances. If an auditor audits three accounts at random, what is the probability that (i) at least (wo will contain an error? (ii) all of them contain an error? il A fair die is thrown 5 times. Getting an even number is a success. Find the probability of getting (i) no success (ii) at least one success. For a binomial distribution, the mean and the standard deviation are respectively 5 and 2. Find the probability of getting 2 successes. 12. Find n.p and q for Binomial distribution in following cases. mean 20 d
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